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sm/tipc: ensure technical-correctness of sins (no page cost)

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This commit is contained in:
Michael Scire 2021-11-06 20:05:32 -07:00
parent f98c7cba98
commit fcc7ce49d9
2 changed files with 19 additions and 11 deletions
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28
libraries/libstratosphere/include/stratosphere/tipc/tipc_deferral_manager.hpp
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@ -96,14 +96,14 @@ namespace ams::tipc {
}; };
static_assert(std::is_standard_layout<DeferrableBaseImpl>::value); static_assert(std::is_standard_layout<DeferrableBaseImpl>::value);
template<typename Interface> template<size_t _MessageBufferRequiredSize>
class DeferrableBase : public DeferrableBaseImpl { class DeferrableBaseImplWithBuffer : public DeferrableBaseImpl {
private: private:
static constexpr size_t MessageBufferRequiredSize = Interface::MaximumRequestSize; static constexpr size_t MessageBufferRequiredSize = _MessageBufferRequiredSize;
private: private:
u8 m_message_buffer[MessageBufferRequiredSize]; u8 m_message_buffer[MessageBufferRequiredSize];
public: public:
DeferrableBase(); DeferrableBaseImplWithBuffer();
private: private:
static consteval size_t GetMessageBufferOffset(); static consteval size_t GetMessageBufferOffset();
}; };
@ -112,17 +112,25 @@ namespace ams::tipc {
return AMS_OFFSETOF(DeferrableBaseImpl, m_message_buffer_base); return AMS_OFFSETOF(DeferrableBaseImpl, m_message_buffer_base);
} }
template<typename Interface> template<size_t _MessageBufferRequiredSize>
consteval size_t DeferrableBase<Interface>::GetMessageBufferOffset() { consteval size_t DeferrableBaseImplWithBuffer<_MessageBufferRequiredSize>::GetMessageBufferOffset() {
return AMS_OFFSETOF(DeferrableBase<Interface>, m_message_buffer); return AMS_OFFSETOF(DeferrableBaseImplWithBuffer<_MessageBufferRequiredSize>, m_message_buffer);
} }
template<typename Interface> template<size_t _MessageBufferRequiredSize>
ALWAYS_INLINE DeferrableBase<Interface>::DeferrableBase() : DeferrableBaseImpl(MessageBufferRequiredSize) { ALWAYS_INLINE DeferrableBaseImplWithBuffer<_MessageBufferRequiredSize>::DeferrableBaseImplWithBuffer() : DeferrableBaseImpl(MessageBufferRequiredSize) {
static_assert(GetMessageBufferOffsetBase() == GetMessageBufferOffset()); static_assert(GetMessageBufferOffsetBase() == GetMessageBufferOffset());
static_assert(sizeof(DeferrableBase<Interface>) >= sizeof(DeferrableBaseImpl) + MessageBufferRequiredSize); static_assert(sizeof(DeferrableBaseImplWithBuffer<_MessageBufferRequiredSize>) >= sizeof(DeferrableBaseImpl) + MessageBufferRequiredSize);
} }
template<typename Interface, size_t MaximumDefaultRequestSize = 0>
class DeferrableBase : public DeferrableBaseImplWithBuffer<std::max(Interface::MaximumRequestSize, MaximumDefaultRequestSize)> {
private:
using BaseImpl = DeferrableBaseImplWithBuffer<std::max(Interface::MaximumRequestSize, MaximumDefaultRequestSize)>;
public:
using BaseImpl::BaseImpl;
};
template<class T> template<class T>
concept IsDeferrable = std::derived_from<T, impl::DeferrableBaseTag>; concept IsDeferrable = std::derived_from<T, impl::DeferrableBaseTag>;

2
stratosphere/sm/source/sm_user_service.hpp
View file

@ -20,7 +20,7 @@
namespace ams::sm { namespace ams::sm {
/* Service definition. */ /* Service definition. */
class UserService : public tipc::DeferrableBase<sm::impl::IUserInterface> { class UserService : public tipc::DeferrableBase<sm::impl::IUserInterface, /* Maximum deferrable CMIF message size: */ 0x20 + util::AlignUp(sizeof(sm::ServiceName), sizeof(u32))> {
private: private:
os::ProcessId m_process_id; os::ProcessId m_process_id;
bool m_initialized; bool m_initialized;